AQA GCSE Chemistry Key Words

The energy needed to start a reaction.

<p>Highly reactive metals found on the left of the periodic table.</p> Signup and view all the answers

<p>Hydrocarbons containing only single bonds.</p> Signup and view all the answers

<p>Hydrocarbons containing double bonds.</p> Signup and view all the answers

<p>A mixture of atoms that lead to distorted layers that cannot slide.</p> Signup and view all the answers

<p>The positive electrode in electrolysis.</p> Signup and view all the answers

<p>The mixture made by adding a soluble substance to water.</p> Signup and view all the answers

<p>A small part of matter made up from a mixture of protons, neutrons, and electrons.</p> Signup and view all the answers

<p>The number of protons in an atom.</p> Signup and view all the answers

<p>The oxide, hydroxide, or carbonate of a metal that will react with an acid, forming a salt as one of the products.</p> Signup and view all the answers

<p>Materials that can be broken down by microorganisms.</p> Signup and view all the answers

<p>Fuel made from animal or plant products.</p> Signup and view all the answers

<p>Mining low yield ores using bacteria to retrieve elements.</p> Signup and view all the answers

<p>The huge reaction vessels used in industry to extract iron from its ore.</p> Signup and view all the answers

<p>To test for double bonds.</p> Signup and view all the answers

<p>A long glass tube with a tap at one end and markings to show volumes of a liquid.</p> Signup and view all the answers

<p>The amount of carbon that is released into the atmosphere based on your daily activities.</p> Signup and view all the answers

<p>Something that speeds up a reaction without being used up.</p> Signup and view all the answers

<p>The negative electrode in electrolysis.</p> Signup and view all the answers

<p>The process whereby small amounts of dissolved substances are separated by running a solvent along a material such as absorbent paper.</p> Signup and view all the answers

<p>An explanation of chemical reactions in terms of reacting particles colliding with sufficient energy for a reaction to take place.</p> Signup and view all the answers

<p>Burning of a compound in oxygen.</p> Signup and view all the answers

<p>Two or more elements chemically bonded together.</p> Signup and view all the answers

<p>Sharing of electrons between two non-metals.</p> Signup and view all the answers

<p>Breaking a long hydrocarbon chain to short hydrocarbon chains.</p> Signup and view all the answers

<p>A mixture of different length hydrocarbon chains made from decomposing dead plants and animals.</p> Signup and view all the answers

<p>Removal of salt from water.</p> Signup and view all the answers

<p>Bonding electron that is no longer associated with any one particular atom.</p> Signup and view all the answers

<p>The variable for which the values are measured for each and every change in the independent variable.</p> Signup and view all the answers

<p>Giant covalent compound where each carbon atom makes four bonds.</p> Signup and view all the answers

<p>The automatic mixing of liquids and gases as a result of the random motion of their particles.</p> Signup and view all the answers

<p>A type of reaction where one element replaces another in a compound.</p> Signup and view all the answers

<p>Separation of liquid from a mixture by evaporation followed by condensation.</p> Signup and view all the answers

<p>Separating compounds using electricity.</p> Signup and view all the answers

<p>A liquid containing free-moving ions that is broken down by electricity in the process of electrolysis.</p> Signup and view all the answers

<p>Found in the shells around the nucleus, has a charge of minus one and no mass.</p> Signup and view all the answers

<p>A group of (or single) atoms that all have the same chemical characteristics and can be found on the periodic table.</p> Signup and view all the answers

<p>A reaction that takes in energy.</p> Signup and view all the answers

<p>The point in a reversible reaction at which the forward and backward rates of reaction are the same.</p> Signup and view all the answers

<p>A reaction that releases energy.</p> Signup and view all the answers

<p>The reaction in which the enzymes in yeast turn glucose into ethanol and carbon dioxide.</p> Signup and view all the answers

<p>The technique used to separate substances that are insoluble in a particular solvent from those that are soluble.</p> Signup and view all the answers

<p>The tendency for a substance to catch fire.</p> Signup and view all the answers

<p>Mixture of compounds.</p> Signup and view all the answers

<p>Separating out a mixture of different length hydrocarbon chains based upon boiling point.</p> Signup and view all the answers

<p>A state of matter where the atoms move fast and randomly, can be compressed and flow.</p> Signup and view all the answers

<p>Giant covalent compound where each carbon atom makes three bonds.</p> Signup and view all the answers

<p>Gas that traps infra-red radiation.</p> Signup and view all the answers

<p>Highly reactive non-metals found on the right of the periodic table.</p> Signup and view all the answers

<p>A group of related organic compounds that have the same functional group.</p> Signup and view all the answers

<p>A compound that only has carbon and hydrogen in it.</p> Signup and view all the answers

<p>When a fuel burns in insufficient oxygen, producing carbon monoxide as a toxic product.</p> Signup and view all the answers

<p>The attraction between the individual molecules in a covalently bonded substance.</p> Signup and view all the answers

<p>Atoms that have lost or gained electrons.</p> Signup and view all the answers

<p>Transfer of electrons between a metal and a non-metal.</p> Signup and view all the answers

<p>Atoms that have the same number of protons but different numbers of neutrons.</p> Signup and view all the answers

<p>The total mass of the products formed in a reaction is equal to the mass of the reactants.</p> Signup and view all the answers

<p>Carried out to assess the environmental impact of products, processes, or services at different stages in their life cycle.</p> Signup and view all the answers

<p>A state of matter where the atoms can move and flow but they cannot be compressed.</p> Signup and view all the answers

<p>The number of protons and neutrons in an atom.</p> Signup and view all the answers

<p>The point at which a solid turns into a liquid.</p> Signup and view all the answers

<p>On the left side of the periodic table, forms positive ions.</p> Signup and view all the answers

<p>Lots of different elements that may or may not be chemically bonded together.</p> Signup and view all the answers

<p>The molecular mass in grams.</p> Signup and view all the answers

<p>The chemical formula that shows the actual numbers of atoms in a particular molecule.</p> Signup and view all the answers

<p>Small reactive molecules that react together in a repeating sequence to form a very large molecule.</p> Signup and view all the answers

<p>Mixing of an acid and an alkali to give a pH of 7.</p> Signup and view all the answers

<p>Found in the nucleus of an atom, has no charge and a mass of one.</p> Signup and view all the answers

<p>Unreactive gases found on the right of the periodic table.</p> Signup and view all the answers

<p>On the right side of the periodic table, forms negative ions.</p> Signup and view all the answers

<p>In the centre of an atom, contains the protons and neutrons.</p> Signup and view all the answers

<p>A comparison of the size of values.</p> Signup and view all the answers

<p>Rock which contains enough metal to make it economically worthwhile to extract the metal.</p> Signup and view all the answers

<p>Loss of electrons.</p> Signup and view all the answers

<p>A way of determining how much yield you get from a reaction.</p> Signup and view all the answers

<p>A way of sorting out the elements.</p> Signup and view all the answers

<p>How acid or alkali a solution is.</p> Signup and view all the answers

<p>Mining low yield ores using plants to retrieve elements.</p> Signup and view all the answers

<p>A glass tube used to measure accurate volumes of liquids.</p> Signup and view all the answers

<p>A substance made from very large molecules made up of many repeating units.</p> Signup and view all the answers

<p>Water that is safe to drink.</p> Signup and view all the answers

<p>A substance made as a result of a chemical reaction.</p> Signup and view all the answers

<p>A substance we start with before a chemical reaction takes place.</p> Signup and view all the answers

<p>List of metals in order of reactivity.</p> Signup and view all the answers

<p>Gain of electrons.</p> Signup and view all the answers

<p>A reaction that can go in either direction.</p> Signup and view all the answers

<p>A state of matter where the atoms vibrate around a fixed position.</p> Signup and view all the answers

<p>Method for determining the concentration of a solution.</p> Signup and view all the answers

<p>Group of metals that are in the middle of the periodic table, form colored compounds and can be used as catalysts.</p> Signup and view all the answers

<p>How easily pourable something is.</p> Signup and view all the answers